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Does B12 Thicken Hair? (Explained!)

One of the best ways you can thicken your hair is through vitamin B12 supplementation. Vitamin B12 is an excellent vitamin that promotes hair growth and thickening. It might be all you need to give your hair the thickness you desire!

Human hair is arguably one of the most attractive parts of the body. So, many people cherish their hair and go the extra mile to take good care of their hair.

If you’re struggling with thinning hair, this guide is for you.

We explain exactly how B12 thickens your hair and different ways to promote thick hair with B12.

Let’s dive in!

Vitamin B12 and hair thickness

Vitamin B12 is a vital nutrient needed for hair growth. It is also known as cobalamin, an essential nutrient required for the healthy growth of your hair. It aids the production of oxygen-rich red blood cells that enhance the function of the hair follicle.

Human hair can be divided into three parts: keratin, the hair follicle, and the papilla.

The keratin is the visible part of the hair. It contains a dead substance, the dark strands you find on your scalp or skin.

The hair follicle is your hair's living part found at the end of the keratin. It is the source of the hair and lies just below the surface of the skin.

The hair follicle has the fastest-growing cells in the body. It is constantly dividing every 23-72 hours, and it produces about 6 inches of hair every year.

At the base of the hair follicle, you will find the papilla. The papilla contains the blood vessel that connects the follicle to the body’s blood supply. The blood supply provides oxygen and the needed nutrients for healthy hair. Without an adequate supply of these nutrients, your hair could get thin or start shedding.

Vitamin B12 allows your hair to receive all essential nutrients to blossom. When absorbed into your systemic circulation, it helps to create red blood cells. These red blood cells nourish the hair follicle with the oxygen necessary for hair growth while carrying away waste.

If you have stunted hair growth or you want thick hair, vitamin B12 can help. All you should do is to ensure you have enough vitamin B12 in your system.

Also, If you start noticing hair loss or breakage, it could be a sign of low vitamin B12. However, you can visit a doctor or a dermatologist to know the necessary steps to take.

Once you have enough vitamin B12, your hair can attain the thickness you want it to. You can also be sure of attractive hair by staying healthy and getting enough vitamins.

The deficiency of vitamin B12 does not only affect your hair; several other complications could come with it, like fatigue, jaundice, and nerve damage. So, it is important to have the required amount to stay healthy.

Let’s see how you can get thick hair with vitamin B12.

Thicken your hair with B12

The body cannot produce vitamin B12, so you need to depend on external sources like animal products and supplements to get enough B12 in your body. It will help your hair growth and thickness.

In this section, we’ll dive deeper into the sources of B12.


Meat is among the most common sources of vitamin B12. It contains an adequate amount of B12 needed by the human body. There are different types of meat, and they all have varying amounts of B12.

Beef contains a high amount of vitamin B12, highly recommendable for people with vitamin B12 deficiency. Chicken also provides a good deal of B12. If you need thick hair and superb hair growth, you should include chicken in your diet.

The liver is also a well-known source of vitamin B. You should not hesitate to incorporate it into your diet.


Fish is a widespread protein-rich food, and it is well-known for its abundance of vitamin B12.

You should add fish and shellfish to your diet if you want to build your vitamin B12 level. This is because they significantly help to enhance your hair growth and ensure thickness.

Fish like salmon, tuna, trout, clams, and lots more are suitable sources of vitamin B12 for your body. Taking these fish will enhance your hair growth and body functions.

Fortified cereals

Fortified cereals are another common source of vitamin B12. You can take several portions of cereal for B12 and hair follicle growth. Consider getting fortified breakfast cereals from your local store to boost your vitamin level.

Vitamin B12 in fortified cereals is excellent because it is readily available for absorption, unlike B12 in meat.

You can decide to take your cereal regularly, daily, or weekly. You can also take it alongside other sources of B12 like fish and meat. All these will ensure the hair growth you desire.

Milk and dairy products

Milk and its products can also be a good source of vitamin B12 for your body. Milk, yogurt, cheese, and butter are rich in protein and vitamin B12. Taking these foods will increase your B12 level, which is good for your hair growth.

If you’re cautious about calories, you can go for low-fat milk, low-fat cheese, and low-fat yogurt.

Alternatively, you can take the normal milk and dairy products modestly.


Eggs are excellent sources of B12 for vegans. Have some eggs every week to nourish your hair.

You can find other B12 sources for vegans in this article.

Aside from these sources, there are also vitamin supplements that can provide your body with B12.

Here are some of the best B12 supplements for nourishing your hair:

Why Not Natural Organic Vitamin B12 Liquid

Why Not Natural Methylcobalamin B12 Liquid Drops

Why Not Natural liquid vitamin B12 is a sublingual supplement that can help nourish your hair. It contains 5000mcg per serving which is different from the conventional 1000 to 3000mcg per servings. The liquid vitamin B12 also enhances immunity and nervous system functionality.

Why Not Natural contains a readily absorbable bioactive form of B12, methylcobalamin. It does not contain any toxic cyanide so it is safe for you to use.

You will get a graduated dropper that allows easy and quick measuring. The vitamin B12 product is also backed with a 60-day money-back guarantee.

Nature Made Vitamin B12 Softgels

With USP testing certificates, Nature Made vitamin B12 soft gels are essential for red blood cell formation and enhancing the nervous system’s functionality.

The supplement also helps convert the food into cellular energy. It ensures a 150-day supply of Nature Made Vitamin B12 soft gels. It contains more than 150 vitamins and supplements for the body.

Vitamin B12 soft gel is made through careful ingredient selection and a strict manufacturing process. It includes elements that work together to form a nutritional benefit for the body.

Vitafusion Vitamin B12 Gummy Supplement

The Vitafusion vitamin B12 gummy supplement supports the metabolism of proteins and fats. It is essential for energy production and red blood cell formation. It also helps convert food to energy for better body functioning and performance.

Vitafusion doesn't contain any high-fructose corn syrup, no synthetic dyes, and no gluten. It is not intended to diagnose, cure, treat, or prevent any disease as it is a vitamin supplement.

Kirkland Signature Quick Dissolve B12

Kirkland Signature is a high potency vitamin B12 supplement that contains highly bioavailable methylcobalamin. Besides red blood cells formation, it helps facilitate energy production in the body and supports the healthy nervous system. It also promotes healthy brain functioning.

The supplement is effortless to use as you only need to dissolve a tablet by placing it on the tongue for seconds before swallowing. The product does not diagnose, cure, treat, or prevent any disease. Each tablet assures the delivery of B12 to the body.

Nature’s Bounty Quick Dissolve Fast Acting Vitamin B12

The Nature’s Bounty vitamin B12 supplement contains 300 quick dissolve tablets. You only need to place it on or under the tongue where it dissolves. It is suitable for energy metabolism and excellent for the functioning of the nervous system.

It does not include any artificial flavor or preservatives. It is also suitable for vegetarians.


You should start paying attention to your vitamin B12 level for thick and healthy hair.

You can get vitamin B12 from food sources like meat, fortified cereals, egg, fish, milk, and dairy products. Another viable option to go for is vitamin B12 enriched supplements like Why Not Natural liquid B12.

With any of these options, you can never go wrong with getting the optimum amount of B12 you need to boost your hair growth.

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